I think the original question should have included an altitude limitation as well - say below 3000 feet. In which case the answer is 3km (the ANO limitation for a PPL with no additional ratings), whereas somebody not knowing the ANO limitation would answer 1500m (the VMC limitation for uncontrolled airspace below 3000 feet).
Last edited by BackPacker; 14th February 2008 at 07:55.